Abstract: A wideband band bus in a base station of a wireless communication system includes consecutively interconnected slots and may be automatically configured into one or more sections that perform application specific cell processing operations, without requiring hardware or software changes to the base station. A section of the wideband bus includes a group of the consecutively connected slots containing digital signal processing modules which implement a cell processing application. The modules included in the slots of a section and the interconnections among the slots provide for diversity reception, expandable cell capacity and cell operations in accordance with wireless communication protocol standards.
Type:
Grant
Filed:
December 20, 1997
Date of Patent:
April 13, 1999
Assignee:
Tellabs Wireless, Inc.
Inventors:
Thierry Maison, Ronald A. Haberkorn, John C. Carrick, Robert E. Snyder, William T. Ralston, Michael A. Wolf
Abstract: A wideband band bus in a base station of a wireless communication system includes consecutively interconnected slots and may be automatically configured into one or more sections that perform application specific cell processing operations, without requiring hardware or software changes to the base station. A section of the wideband bus includes a group of the consecutively connected slots containing digital signal processing modules which implement a cell processing application. The modules included in the slots of a section and the interconnections among the slots provide for diversity reception, expandable cell capacity and cell operations in accordance with wireless communication protocol standards.
Type:
Grant
Filed:
March 22, 1996
Date of Patent:
February 17, 1998
Assignee:
Tellabs Wireless, Inc.
Inventors:
Thierry Maison, Ronald A. Haberkorn, John C. Carrick, Robert E. Snyder, William T. Ralston, Michael A. Wolf
Abstract: A robust interpolator performs internal data correction to avoid catastrophic errors. The interpolator includes a filter connected to an integrator by both a feedforward path and an element that increases the data rate of the output of the filter. The filter processes signals arriving at an input data rate to produce differentiated data and filtered data. The filtered data represents an output of the integrator in the absence of error. The integrator receives the differentiated data from the element at a data rate higher than the input data rate, and receives the filtered data via the feedforward path. A transmultiplexer producing a wideband signal from two or more narrowband signals employs the interpolator to increase the data rate of its output.